The murine B lymphocyte Fc epsilon R is functionally multivalent. Radiolabeled rat IgE, when bound to the B cell Fc epsilon R will co-isolate with the Fc epsilon R on a rat IgE affinity column; examination of the affinity column eluate by SDS-PAGE reveals the component previously identified as the Fc epsilon R as well as E and L chains from IgE. At low levels of Fc epsilon R saturation, up to 30% of the Fc epsilon R bound IgE becomes bound to IgE-Affi-Gel. By using a biotin-avidin system, the coprecipitation of non-haptenated IgE with haptenated IgE was examined and the results suggest (but do not prove) a divalent receptor.
The murine lymphocyte receptor for IgE. II. Characterization of the multivalent nature of the B lymphocyte receptor for IgE.
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W T Lee, D H Conrad; The murine lymphocyte receptor for IgE. II. Characterization of the multivalent nature of the B lymphocyte receptor for IgE.. J Exp Med 1 June 1984; 159 (6): 1790–1795. doi: https://doi.org/10.1084/jem.159.6.1790
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